Inner-tube covering for tires



F. S. BENNETT.

INNER TUBE COVERTNG FOR TIRES.

APPLICATION FILED OCT. II, I919.

1,346,632. P tented uly 13,1920,

type.

instance, by stitching.

FRANK S. BENNETT, 0F PHILADELPHIA, PENNSYLVANIA.

INNER-TUBE COVERING FOR TIRES.

Specification of Letters Patent.

Patented July 13, 1920.

Application filed October 11, 1919. Serial No. 330,070.

that work their way into the space between the shoe of the tire and the inner tube, and

also by the rubbing of the shoe against the I inner tube. My invention also prevents the adhering of the inner tube to the shoe,

In the accompanying drawings:

Figure 1 is a perspective view, showing a deflated inner tube with the cover thereon; Fig. 2 is aperspective sectional view, showing the shoe of an automobile tire, the inner tube and the protecting covering, and

Fig. 3 is a view illustrating a modification of the means for fastening the edges of the cover together.

Referring to the drawings, 1 is an ordinary shoe of an automobile tire. 2 is the inner tube having a valve stem 3 of the usual 4 is a covering for the inner tube, which is endless, the two ends of the tube being secured together at 5, in the present The tube is preferably made of a ribbed, knitted fabric in which the ribs .run longitudinally of the tube, so as to allow it to yield laterally when the inner t'ubeis expanded. At each edge of the covering is a binder G of woven fabric, held to the covering by stitching. At one edge is a flap 7, which passesunder the outer edge. 7 The two edges are held together by any suitable fastenings.

In Fig. 2, I have illustrated snap fastenings 8, arranged at intervals, but it will be understood-that buttons may be used, or the two edges may be laced together, as shown in Fig. 3. The two binders 6 have eyelet holes 9 spaced a given distance apart and a lacing 10 is introduced so as to draw the two ed es together, as shown in said figure. Other suitable means may be provided for securing the edges of the covering together.

It will be understood that the fabric is preferably knitted so as to allow it to expand freely to accommodate the action of the tire when in service. It will be understood that it may be of any thickness desired.

I find that by the use of this covering any small particles, pebbles, or stones, which work their way between the inner tube and the casing, will not chafe, or bruise, the inner tube, as they will becomeembedded in the fabric of the covering andjheld therein, the thickness of the covering preventing the pebbles, or other small particles, from attacking the inner tube.

Furthermore, the covering prevents the inner tube adhering to the outer casing, which often occurs when there is not sufficient powdered substance between the two. I find that very little powdered material is required. In some instances I have found that the powdered material can be dispensed with, when the covering is used.

In some types of tires, a piece of .fabric is secured to one side of the shoe so as to extend over the opening to prevent dust from entering this open space, but by the use of the covering, as shown, this piece of fabric may be dispensed with.

I find, in practice, that the material of the tube does not show appreciable wear when used in long service, and it protects the inner tube. The majority of blowouts of the inner tube are caused by small pebbles working their way into the surface of the tube and weakening it at that point so that, when the tire strikes an obstruction, this weakened portion of the tube gives way and a blowout occurs.

In some instances, two or more thicknesses of fabric may be used when it is desired to have a thick body of fabric between the shoe and the inner tube.

I claim: I

1. As a new article of manufacture, ,a strip of fabric adapted to be folded so as to detachably envelop an inner tube of an inflatable tire, said strip being composed of a close-mesh, knitted textile fabric having the property of embedding foreign particles which may enter between the tube and its carcass or shoe, and reducing friction between said tube and shoe, and co-acting fastenings along the meeting edges of said 2. As a new article of manufacture, a strip of fabric adapted to be folded so asto detachably envelop an inner tube of an inflatab a tire. said strip being composed of a close= esh, knitted textile fabric having the property of embedding foreign particles which may enter between said tube and its carcass or shoe, and reducing friction between said tube and shoe, and co-acting fastenings along the meeting edges of said strip, said strip having a binder along its edges, one of said edges having'a flap to underlie the other edge. 7

3. As a new article of manufacture, an auto tire sock formed of a strip of fabric adapted to be folded so as to detaehably en- JLO velop' an inner tube of an inflatable tire, said strip being composed of a close-mesh, knitted textile fabric having the property of embedding foreign particles which may enter between the tube and its carcass or shoe, and

strip.

FRANK S. BENNETT. 

